Re: [PATCH v2 4/6] drm/atomic: Return commit in drm_crtc_commit_get for better annotation

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On Mon, Sep 04, 2017 at 12:48:36PM +0200, Maarten Lankhorst wrote:
> This will allow code to do x->commit = drm_crtc_commit_get(commit),
> making it clearer where references are used.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

> ---
>  drivers/gpu/drm/drm_atomic_helper.c | 3 +--
>  include/drm/drm_atomic.h            | 6 +++++-
>  2 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 1f5cdafb050e..04629d883114 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -1633,8 +1633,7 @@ static int stall_checks(struct drm_crtc *crtc, bool nonblock)
>  				return -EBUSY;
>  			}
>  		} else if (i == 1) {
> -			stall_commit = commit;
> -			drm_crtc_commit_get(stall_commit);
> +			stall_commit = drm_crtc_commit_get(commit);
>  			break;
>  		}
>  
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index 285fbc4ec360..a80a8dadef00 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -251,10 +251,14 @@ void __drm_crtc_commit_free(struct kref *kref);
>   * @commit: CRTC commit
>   *
>   * Increases the reference of @commit.
> + *
> + * Returns:
> + * The pointer to @commit, with reference increased.
>   */
> -static inline void drm_crtc_commit_get(struct drm_crtc_commit *commit)
> +static inline struct drm_crtc_commit *drm_crtc_commit_get(struct drm_crtc_commit *commit)
>  {
>  	kref_get(&commit->ref);
> +	return commit;
>  }
>  
>  /**
> -- 
> 2.11.0
> 
> _______________________________________________
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> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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